某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1k量程 b．将红�表笔分别插入相应 Sketch Coloring Page

某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1k量程 b．将红�表笔分别插入相应 Template

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tomski某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 a．将选择开关扳到欧姆档×1k量程 b．将红�表笔分别插入相应 coloring

某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1K量程 B．将红�表笔分别插入相应 sketch template

题目1在实验室某同学用多用电表粗测一段样品的电阻经正确操作后用“×100Ω 档时�现指针偏转情况如图所示则他应该换用 档填 sketch template

某同学想通过一个多用电表中的欧姆挡直接去测量某 电压表的内阻该多用电表刻度盘上读出电阻刻度中间值为30则1欧姆挡的选择开关拨至挡先 sketch template

2．某同学测量一只未知阻值的电阻． 1他先用多用电表进行测量按照正确的步骤操作后测量的结果如图2 53甲所示．请你读出其阻值大小为 sketch template

在练习使用多用电表的实验中1某同学用多用电表测量电阻按正确使用方法测量出电阻Rx的阻值．若该欧姆表使用一段时间后电池电动势变小内阻 sketch template

在使用多用电表测电阻时一同学选用“×10 W 挡调整欧姆零点后测量一电阻的阻值�现表针�右偏转幅度太大为了把电阻值测得更准确些下列 sketch template

在“用多用表测电阻 的实验中下列说法正确的是 A．测量阻值不同的电阻时都必须重新调零 B．欧姆档指针恰好指示在20Ω与30Ω的正中央所测 sketch template

2．某同学测量一只未知阻值的电阻． 1他先用多用电表进行测量按照正确的步骤操作后测量的结果如图2 53甲所示．请你读出其阻值大小为 sketch template

22． 1甲乙两同学在实验室测量同一定值电阻的阻值 �甲同学用多用电表按正确操作步骤测量表针位置如图1所示读数是 Ω �乙 sketch template

某同学在实验室准备用以下器材测一个电源的电动势E和内阻r要求测量尽量准确能测量多组数椐且�动变阻器调节方便．A．电流表G量程500μA sketch template

在做“用电流表和电压表测电池的电动势E和内电阻r 的实验时部分器材参数如下电压表电流表定值电阻R0�动变阻器R．1小红按如图甲所 sketch template

某同学在“测量小灯泡电阻 的实验中设计了如图22甲所示的电路图小灯泡上标有“38V15W 字样请完成和解答下列问题 1在图22 sketch template

某同学在用电压表和电流表“测定小灯泡实际功率 的实验中当他闭合开关移动变阻器�片过程中�现灯泡变亮时电压表示数反而减小小灯泡变暗时 sketch template

【题文�某同学设计了一个多量程多用电表，其内部结构原理图如图所示。其电流表的量程分别为10mA和250mA，电压表的量程分别为10V和250V sketch template

14．某同学测量一只未知阻值的电阻他先用多用电表进行测量按照正确的步骤操作后测量的结果如上图所示请你读出其阻值大小为 Ω为了使测量 sketch template

在练习使用多用表的实验中1某同学连接的电路如图所示�若旋转选择开关使尖端对准直流电流挡此时测得的是通过 的电流填R1或R2�若 sketch template

题目1在实验室某同学用多用电表粗测一段样品的电阻经正确操作后用“×100Ω 档时�现指针偏转情况如图所示则他应该换用 档填 sketch template

题目某同学要测量额定电压为3V的某圆柱体电阻R的电阻率1用游标卡尺测量其长度如图所示则其长度L= Mm2为精确测量R的阻值 sketch template

多用电表测电阻电路图万用表测电阻电路图多用电表测电阻图大山谷图库 sketch template

21． 1如图甲所示为多用电表的示意图现用它测量一个阻值约为200Ω的待测电阻具体测量步骤如下 � 调节使电表指针停在表盘左侧的 sketch template

某同学在实验室准备用以下器材测一个电源的电动势E和内阻r要求测量尽量准确能测量多组数据且�动变阻器调节方便．A．电流表G量程500μA sketch template

题目根据所学知识完成题目1用多用电表测量小灯泡两端电压时应该采用图所示的连接方式．2实验小组的同学们用如图3所示的装置做“用单� sketch template

某同学利用如图2所示的电路测定电阻Rx的阻值所用�动变阻器上标有“20Ω 2A 字样电源电压不变．该同学实验步骤正确闭合开关S观察到 sketch template

15．某同学在做多用电表测电阻的实验中 1测量某电阻时用“×10W 档时�现指针偏转角度过大他应该换用 档换档后在测量前先要 sketch template

题目小王和小李同学准备测量一未知电阻的阻值1他们首先用多用电表的“×1k 挡来测量电压表的内阻�现指针偏转如图1中“I 所示于是 sketch template

题目某同学在实验室做“测定电源电动势和内阻 的实验时�现实验桌上还有一个定值电阻R0．于是设计了如图甲所示的电路来测量电源电动势E内阻 sketch template

2012•华安县质检某同学用电压表和电流表测定待测电阻Rx的阻值正确连接实验电路电源电压不变�动变阻器上标有“20Ω 2A 字样该 sketch template

某同学利用多用电表测量一个未知电阻的阻值由于第一次选择的欧姆档不够合适现改换另一欧姆档测量．两次测量时多用电表指针所指位置如图所示下面 sketch template

某同学在用电源电压表电流表�动变阻器开关和若干导线测定电阻RX值．所有元件均完好电源电压为60V且不变�动变阻器标有 sketch template

在用伏安法测定值电阻R1阻值的实验中某同学误接成了如图所示的电路测得的有关电流表和电压表的数据如下表所示并根据表格中的数据绘制如图乙所示 sketch template

21．如图是多用电表的示意图现用它测量一个约为20 30W定值电阻的阻值具体测量步骤如下 A．将多用电表的 旋转到电阻“ 选填“´1 sketch template

某同学在用多用表测定一个阻值约为十几欧姆的小电珠的电阻时他的操作步骤如下 A．将选择开关扳到欧姆档×1K量程 B．将红�表笔分别插入相应 sketch template

某同学测量一只未知阻值的电阻Rx�他先用多用电表进行测量，指针偏转如图甲所示．为了使多用电表的测量结果更准确，该同学应选用挡位，更换挡位重新 sketch template

某同学用电压表和电流表测定待测电阻Rx的阻值正确连接实验电路电源电压不变�动变阻器上标有“20Ω 2A 字样．该同学实验步骤正确闭合 sketch template

某同学用多用电表对电阻大小进行粗测选用欧姆档的“×10 档位按正确的操作步骤测此圆柱体的电阻表盘的示数如图则该电阻的阻值约为100Ω sketch template

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